Document Detail

A dissociation in naming digits and colors following commissurotomy.
MedLine Citation:
PMID:  8886526     Owner:  NLM     Status:  MEDLINE    
Pairs of red and green digits were flashed in the opposite visual fields of L.B., a man with complete forebrain commissurotomy. He was highly accurate in naming both digits, the green ones alone, or the red ones alone, regardless of field. In contrast, he was relatively poor at naming the colors of the digits in the left visual field, and in comparing colors between fields. This dissociation suggests either (a) that information about shape was tagged by color and transferred from right to left hemisphere, but information about color itself was not transferred, or, more likely (b) that L.B.'s right hemisphere has acquired the ability to overtly name highly familiar stimuli, such as digits, but not colors.
M C Corballis
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cortex; a journal devoted to the study of the nervous system and behavior     Volume:  32     ISSN:  0010-9452     ISO Abbreviation:  Cortex     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1997-02-20     Completed Date:  1997-02-20     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0100725     Medline TA:  Cortex     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  515-25     Citation Subset:  IM    
Department of Psychology, University of Auckland.
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MeSH Terms
Anomia / diagnosis,  physiopathology*
Attention / physiology*
Color Perception / physiology*
Corpus Callosum / physiopathology,  surgery*
Dominance, Cerebral / physiology*
Epilepsy / physiopathology,  surgery*
Follow-Up Studies
Neuropsychological Tests
Pattern Recognition, Visual / physiology*
Postoperative Complications / diagnosis,  physiopathology*
Reaction Time / physiology
Visual Fields / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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